What port does CDP use?

CDP does not use a specific default port number.

Unknown

Cisco Discovery Protocol

Q: What is Cisco Discovery Protocol?

Cisco Discovery Protocol (CDP) is a Data Link Layer protocol in the Monitoring & Management category. Cisco proprietary Layer 2 protocol for discovering directly connected Cisco devices. Shares device type, IP address, IOS version, and interface information across Cisco infrastructure.

Data Link Layer — Monitoring & Management

协议概览

全称 Cisco Discovery Protocol

缩写 CDP

OSI 层 Data Link Layer

类别 Monitoring & Management

关于 CDP

Cisco proprietary Layer 2 protocol for discovering directly connected Cisco devices. Shares device type, IP address, IOS version, and interface information across Cisco infrastructure.

Data Link Layer Monitoring & Management

Cisco Discovery Protocol

协议概览

关于 CDP

相关协议 — Data Link Layer